Good day, gents. I purchased a YS-110Z s version a couple months ago and it is absolutely wonderful. It's in a World Models Tai-Ji 90 and is actually too much power for that plane. Since I'm new to this engine, and pattern flying for that metter, I am trying to learn as much as I can. I was first using YS-20/20 fuel with a 15-8 prop. It flew well but one of my flying buddy's convinced me to go to Cool Fuel 30% heli fuel and am now using a 16-8 prop.
After adjusting high and low speed mixtures I noticed that there was fuel dripping from the cowling so I adjusted the regulator CW about 1/4 turn. I believe that this leaned the flow through the regulator, but I'm not sure. My concern is that even though I have a 16 oz fuel tank I am only getting 8 minutes flying time, at most, when I keep the throttle averaging about 90%. The high-speed mixture is still set rich, to keep the engine cooler; the low-speed mixture is set for a constant at 2,000 rpm, and the transition from low to high speed is smooth. I'm a novice at adjusting the regulator and I'd like some input on how to reduce the fule flow. I should be able to get more flight time than this. Any comments?